Pressure-generator



R. E. DAVIS.

PRESSURE GENERATOR.

APPLICATION FILED ums. 1919.

Patented Mar. 22, 1921.

Indenor. Ruck erlf Daz/cls'.

` Qorneyi UNITED STATES PATENT OFFICE.

PRESSURE-GENERATOR.

Specification of Letters Patent.

Patented Mar. 22, 1921.

,Application illed December 5, 1919. Serial No. 342,681.

To all whom z't may concern Be it known that I, RUCKER E. DAVIS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful I mprovements in Pressure-Generators, of which the following is a specification.

This invention relates to apparatus for generating fluid pressure suitable for use as the motive fluid of prime movers of any type, and its object is to provide a novel and improved apparatus for generating a motive fluid consisting .of steam and the combustion products of a liquid fuel.

The object stated is attained by means of a combination and arrangement `of parts to be hereinafter described and claimed, and in order that the same may be better understood, reference is had tothe accompanylng drawing forming a part of this specification.

The drawing shows van elevation of the apparatus, partly diagrammatic, and partly in section.

Referring specifically to the drawing 5 denotes a retort chamber which has its out-v let arranged to discharge into a combustion chamber 6, the latter 1n turn, discharging into a second combustion chamber 7 which discharges into a mixing chamber 8 having an outlet 9 from which the generated motive ,fluid is led to the engine or motor to be driven by such fluid.

In the Vchamber 6 is -a vapor generating coil 1() which is closed`at one end, and has its other end formed with an outlet nozzle 11 extendin into the contracted outlet end 12 of the clgiamber 6 to discharge into the chamber 7.

In the chamber -7 is a water heating coil 13 similar to the coil 10, which is also closed at one end, and has its other end formed with a nozzle 14 extending into the contracted outlet end 15 of the chamber 7 to discharge into the chamber 8.

The chamber 6 is surrounded by a water jacket 16, the chamber 7 by a water jacket 17 and the chamber 8 by a water jacket 18.

From a tank or other source 19 of water supply, aconnection is made by a pipe 20 with the water jacket 16. A pipe 21 connects the water jackets 16 and 18, and a pipe 22 connects the jackets 18 and 17.

The coil 13 has a connection at its rear end with the water jacket 17, as shown at 23.

It will be evident from the foregoing that the water jackets 16, 17, and 18 and the e011 13 are supplied with water from the source 19. i

The wall of the retort chamber 5 has an internal fuel vaporizing passageway 24, which is s irally arranged and has a discharge orifice 25 near the outlet end of said chamber, and to the opposite, or rear end of the passageway is connected a fuel supply pipe 26 having a valve 27 and leading from a pressure fuel tank 28 supplied with air from a pump 29 through a pipe 30. The tank 28 contains a liquid fuel, and the latter is forced from the tank by an air pressure. As this is a well known expedient a further description thereof is not deemed necessary.

The air line 30 has a branch 31 discharging into the retort chamber 5, and another branch 32 discharging into a duct 33 which opens into the chamber 7, as shown at 34, and also into the outlet portion 12 of the chamber 6 as shown at 35.

A fuel pipe 36 leads from a supply tank 37, containing a liquid fuel, and dischar es into the retort chamber 5, and in said ipe 1s a vapor generating coil 38 located 1n a pan 39.

In the air lines 31 and 32 are valves 40 and 41, respectively, and from the fuel line 26 a valved branch 42 extends to discharge into the coil 10.

The apparatus is started by heating the retort 5 by means of vaporized fuel issuing from the pipe 36 and discharging into the retort, the fuel being Vaporized in the coil 38, it being understood that said coil is heated by igniting a suitable quantity of liquid fuel in the heating pan 39. After the retort is sufficiently heated, the pipe 36 may be removed and the opening in the retort through which it extended plugged up. The valve 27 is now opened to,r admit liquid fuel into the internal fuel passage 24 of the retort wall, in which it 1s vaporized, the vapor being discharged from the orice 25 into the chamber 6. This vapor is lighted by a hand torch inserted into the chamber 6 after a plug 43 is removed, and after being lighted, the plug is replaced. The burning vapor in chamber 6 heats the coil 10 therein, so that when liquid fuel is admitted to said coil, by opening a Valve 44 in the pipe 42, said fuel 1s also vaporized, and the vapor is discharged through the nozzle 11 into the vchamber 7. The ames from the burning discharged into the chamber 8 v and the mixed motive fluid is vapor in the chamber 6 are also discharged into the chamber 7 in which they unite with the va r discharged thereinto by the nozzle 11. he combustion place in the chamber 7 heats the Ycoil 13 and the steam generated in said coil is discharged into the chamber 8 through the nozzle 14. The combustion products in the chamber 7 are also where they mix with-the steam discharged thereinto, then led from the outlet 9 to the motor to be driven by said fluid.

Before reaching the coil 13, the water is heated in the water jackets surrounding the chambers 6, 7 and 8, and it enters the coil heated to a high degree, steam starting to form in the water jacket 17.

A pipe 45 also extends from the water jacket 17 to discharge intothe retort 5, and as the Water'in the jacket has already been converted into steam, the latter is discharged through the retort into the chamber 6, to increase the combustion thereim- The chambers 6 and 7 also receive sufficient .air through the pipe 32 to support combus-J tion.

The coils 10 and 13 gradually increase in size or cross sectional area in the direction of their discharge ends so as to provide for expansion of the vapors as they are heated. It will also be noted that the' nozzles 11 and 14 are flared in the direction of their outlet ends to create pressure at the smaller ends and allow expansion at their outlets.

I claim:

1. A mixed fluid pressure generator comprising a combustion chamber, a liquid fuel vaporizing pipe in said chamber, a second combustion chamber into which the first mentioned combustion chamber and the vaporizing pipe discharge, a steam generating pipe in the second combustion chamber, and a mixing chamber into which the steam generating pipe and the second combustion chamber discharge.

`2. A mixed fluid pressure generator comprising a combustion chamber, a liquid fuel vaporizing pipe in said chamber, a second combustion chamber into which the first mentioned combustion chamber and the vaporizing pipe discharge7 a steam generator in the second combustion chamber, a mixing chamber into which the steam generator and the second combustion chamber discharge, and water jackets around the aforesaid chambers, said jackets having a connection with the steam generator.

3. A mixed fluid pressure generator comprising a combustion chamber, a liquid fuel vaporizing' pipe in said chamber, a second combustion chamber into which the first mentioned comilusion chamber and the vaporizing pipe ar a steam nerator in the second combustigoeii chamberjbiie mixing chamber into which the steam generator and the second combustion chamber discharge, and a retort in the first mentioned combustion chamber and opening thereinto, said retort having fuel vaporizing means discharging into the first mentioned combustion chamber.V

il. A mixed fluid pressure generator comprisinga combustion chamber, a liquid fuel vaporizing pipe in said chamber, a second combustion chamber into which the first mentioned combustion chamber and the vaporizing pipe discharge, a steam generator in the second combustion chamber, a mixing chamber into which the steam generator and the second combustion chamber discharge, a retort in the first mentioned combustion chamber'and opening thereinto, said retort having-fuel vaporizing means discharging into the first mentioned combustion chambei, and a Starting burner for the retort.

A mixed fluid pressure generator comprismga combustion chamber, a liquid fuel vaporizing pipe in said chamber, a second combustion chamber into which the first mentioned combustion chamber and the vaporizing pipe discharge, a steam generator in the second combustion chamber, a mixing chamber into which the steam generator and the second combustion chamber discharge, water jackets around the aforesaid chambers, said jackets having a connection with the steam generator, and a retort in the first mentioned combustionchamber and opening thereinto, said retort having fuel vaporizing means discharging into the first mentioned combustion chamber.

6. A mixed fluid preure generator comprising a combustion chamber, a liquid fuel vaporizing pipe in said chamber, a second combustion Achamber into which the first mentioned combustion chamber and the vapipe discharge, a steam generator in the second combustion chamber, a mixing chamber into which the steam generator and the second combustion chamber discharge, and a retort in the first mentioned combusv tion chamber and opening thereinto, said retort having its Wall formed with a fuel vaporizing passageway discharging into the first mentioned combustion chamber.

In testimony whereof I alx my signature.

RUCKER E. DAVIS. 

